Teaching UKPSC Lecturer Mock Test Series 2024 Chemistry

pKb of NH4OH is 5. The pH of a mixture containing 10mL of 0.3 M NH4OH and 200 mL of 0.1 M (NH4)3 PO4 is:

1
5
2
5.3010
3
6.3010
4
7.6987
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